نوع مقاله : مقاله پژوهشی
نویسندگان
1 دانشیار فیزیولوژی ورزشی، گروه فیزیولوژی ورزشی، دانشکده علوم ورزشی، دانشگاه تهران، تهران، ایران.
2 کارشناس ارشد فیزیولوژی ورزشی، گروه فیزیولوژی ورزشی، دانشکده علوم ورزشی، دانشگاه تهران، تهران، ایران.
3 دکتری فیزیولوژی ورزشی، گروه فیزیولوژی ورزشی، دانشکده علوم ورزشی، دانشگاه تهران، تهران، ایران.
4 دکتری فیزیولوژی ورزشی، گروه فیزیولوژی ورزشی، دانشکده علوم انسانی، دانشگاه تربیت مدرس، تهران، ایران.
چکیده
زمینه و هدف: نسفاتین-1 و نوروپپتید Y به ترتیب دو هورمون ضداشتها و اشتهاآور هستند که نقش مهمی در تعادل انرژی و چاقی ایفا می‌نمایند. پژوهش حاضر با هدف بررسی تأثیر 12 هفته تمرین مقاومتی بر هورمون های نسفاتین-1 و نوروپپتید Y در مردان چاق کم تحرک صورت گرفت. روش تحقیق: در این مطالعه نیمه تجربی، تعداد 30 نفر از مردان 48 تا 60 سال با 30BMI≥ انتخاب و به طور تصادفی به دو گروه تمرین مقاومتی و کنترل تقسیم شدند. برنامه تمرینی شامل 12 هفته تمرین مقاومتی، 3 جلسه در هفته، 3 دوره با 13-10 تکرار در هر جلسه و با شدت 75-50 درصد یک تکرار بیشینه و زمان استراحت 90-60 ثانیه بود. هر 4 هفته یک تکرار بیشینه جدید آزمودنی ها محاسبه و مجدداً مقادیر وزنه ها تعدیل می‌گردید. نمونه‌گیری خونی قبل و بعد از 12 هفته برای اندازه‌گیری غلظت سرمی نسفاتین-1 و نوروپپتید Y اخذ گردید. جهت استخراج نتایج از روش آماری تحلیل واریانس با اندازه‌های تکـراری استفـاده گردید و سطح معنی داری 0/05>p در نظر گرفته شد. یافته‌ها: به دنبال انجام 12 هفته تمرین مقاومتی، تغییر معنی‌داری در سطح نسفاتین-1 ایجاد نگردید (0/66=p)، در حالی که سطح نوروپپتید Y به طور معنی داری افزایش یافت (0/01=p). به علاوه، کاهش معنی داری در نمایه توده بدنی (0/02=p)، درصد چربی بدن (0/01=p) و دور کمر (0/0001=p) در گروه تمرین مشاهده شد. نتیجه‌گیری: عدم تغییر معنی دار غلظت نسفاتین-1 در افراد چاق دال بر آن است که نوع، شدت و مدت زمان این نوع تمرین برای ایجاد تغییر در این متغیر کافی نبوده است؛ اما افزایش معنی دار نوروپپتیدY نشانه تعادل انرژی منفی پس از تمرین مقاومتی می باشد.
کلیدواژه‌ها
عنوان مقاله [English]
Effect of 12 weeks resistance training on nesfatn-1 and neuropeptide Y hormones in sedentary obese men
نویسندگان [English]
- Rahman Soori 1
- Fatemeh Mahmoodi 2
- Azam Ramezankhani 3
- Kia Ranjbar 4
1 Associate Professor, Depatment of Exercise Physiology, Faculty of Sport Science, Tehran University, Tehran, Iran.
2 Msc in Exercise Physiology, Depatment of Exercise Physiology, Faculty of Sport Science, Tehran University, Tehran, Iran.
3 PhD in Exercise Physiology, Depatment of Exercise Physiology, Faculty of Sport Science, Tehran University, Tehran, Iran.
4 PhD in Exercise Physiology, Depatment of Exercise Physiology, Faculty of Humanities, Tarbiat Modares University, Tehran, Iran.
چکیده [English]
Background and Aim: Nesfatin-1 and neuropeptide Y are anti-appetite and the appetite hormones that play and important roles in energy balance and obesity. The aim of this study was to assess the effects of 12 weeks resistance training on serum levels of nesfatin-1 and neuropeptide Y in sedentary obese men. Materials and Methods: In this quasi-experimental study, 30 men aged between 48 to 60 years with BMI≥30 kg/m2, were randomly allocated to the resistance training and control groups. The training program consists of 12 weeks of resistance training, 3 sessions a week, 3 sets with 10 to 13 reps per session and with the intensity of 50-75% of one repetition maximum and 60-90 seconds rest. Every four weeks, one repetition maximum was calculated and the weights were adjusted again. Before and 48 hours after the 12 weeks exercise, measurement of nesfatin-1 and neuropeptide Y were performed. Repeated measures ANOVA was used for statistical analysis at significance level of pResults: The results revealed that after 12 weeks resistance training, significant changes were not observed in the levels of nesfatin-1 (p=0.59) and cortisol (p=0.60). The levels of neuropeptide Y significantly (p=0.01). Also, a significant reduction in body mass index (p=0.02), body fat percent (p=0.01) and waist circumference (p=0.001) was observed in training group (p<0.05). The results showed that nesfatin-1 concentration did not change significantly in obese people after 12 weeks of resistance training. Conclusion: The type, severity and duration of this type of training is not enough to make a difference in these variables. There was also a significant increase in levels of neuropeptide Y, which represents the negative energy balance in subjects in resistance group.
کلیدواژه‌ها [English]
- resistance training
- Nesfatin-1
- Neuropeptide Y
- Obesity
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